The general amnesty act of 1872
a.
allowed african americans to sue private businesses for discrimination.
b.
ended the impeachment proceedings against president johnson.
c.
placed radical republicans in control of most southern states.
d.
allowed most former confederates to hold public office.

i think the answer is b

Explanation:

D. Allowed most former Confederates to hold public office.

Explanation:

The Amnesty Act of 1872 was enacted on May 22, 1872. It annulled the sentences dictated on previous Confederates based on the 14th Amendment of 1868.

In particular, this act anulled restrictions to vote and inabilities to hold office on people who were insurrectionists in the American Civil War, with the exception of senators and members of the 36th and 37th Congresses as welll as officers of different services, directors of Departments, and American foreign ministers.  

the fact that could also be added to column b is that during world war ii, specifically between the years 1941 and 1945, japan expanded its territory towards the indonesian territory in what was known later as part of the "pacific war". in that time, japan could conquer the philipines, singapore,   borneo, central java, malang, cebu, sumatra and various other islands of the area, therefore expanding its territory for a brief period of time.